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Optical Engineering

Investigation of acousto-optic tunable filter parameters for fast spectrometer application
Author(s): Attila Barocsi; Laszlo Jakab; Peter I. Richter; Christian Schroedter; Christoph Hagedorn
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Paper Abstract

Ideally an acousto-optic tunable filter is capable for selecting a single optical wavelength from a broadband polychromatic light beam simply by its electronic tuning. In practice, however, both the wavelength resolution and the operating wavelength range of the filter are limited by its electric and optical properties. An experimental configuration of a computer-controlled, fast acousto-optic spectrometer, based on an acousto-optic tunable filter operating in the 400- to 800-nm visible range with an average resolution of 10 nm is constructed and studied. The spectrometer has been operated in broadband optical measurements, such as determination of transmission spectra of complex, multilayer optical thin films and also real-time, in situ monitoring of evaporation processes. During the experiments, an anomalous behavior of the filter was observed that seriously limited the performance of the filter in the blue region. Some requirements necessary for spectrometer application are summarized and theoretical and experimental results are given illustrating the existence and also the elimination of this anomalous behavior.

Paper Details

Date Published: 1 October 1993
PDF: 5 pages
Opt. Eng. 32(10) doi: 10.1117/12.145313
Published in: Optical Engineering Volume 32, Issue 10
Show Author Affiliations
Attila Barocsi, Technical Univ. of Budapest (Hungary)
Laszlo Jakab, Technical Univ. of Budapest (Hungary)
Peter I. Richter, Technical Univ. of Budapest (Hungary)
Christian Schroedter, Fachhochschule (Germany)
Christoph Hagedorn, Max-Planck Institute for Quantum-Optics (Germany)

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